Valve-seat for pneumatic apparatus.



A P. GUSTAFSON.

VALVE SEAT FOR PNEUMATIC APPARATUS. APPLICATION FILED FEB. 16, 1915 1,164,088 Patented Dec. 14, 1915.

wzL/zaew Mrefor wfajrm UNITED STATES PATENT OFFICE.

ADOLPH P. GUSTAFSON, OF CHICAGO, ILLINOIS, ASSIGNOR TO M. SCHULZ COMPANY, OF

CHICAGO, ILLINOIS.

VALVE-SEAT FOR PNEUMATIC APPARATUS.

Application filed February 16, 1915.

To all whom it may concern.

Be it known that I, AuoLPir P. GUSTAFSON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Valve-Seats for Pneumatic Apparatus, of which the fllowing is a full, clear, concise, and exactdescription, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to valve seats for pneumatic apparatus and its principal object is to provide a valve seat which will not corrode or become damaged or affected by conditions and circumstances to which it is subjected, but which can be cheaply constructed and easily and quickly secured satisfactorily in proper position.

In accordance with my invention I provide a valve seat of a separate piece of material which is adapted to be fitted and secured in its proper place, a construction which I find exceedingly satisfactory being to make the valve seat in the form of a disk of suitable flexible material. such for example as waterproof paper. This disk or piece of such other suitable shape as may be desired, may be permanently secured in place by glue and when so secured will make a satisfactory valve seat which will not be affected by the acid in the leather of the valve, nor will it corrode or otherwise affect the leather while at the same time a satisfactory, even valve seat is provided which is sufficiently flexible to take up unevennesses in the valve leather, and at the same time follow the inclination of the wood in swelling and shrinking.

In the accompanying drawing Figure 1 is a pneumatic having a valve seat embodying my present invention; Fig. 2 is a plan of the same; and Fig. 3 is a perspective view of the valve seat itself.

Referring to the drawings I show a pneumatic 1 which may be of any type or style of pneumatic, the one disclosed in the drawing corresponding to the structure disclosed by me in my application datedFebruary 16, 1915, Serial No. 8525, the same forming no part of my present invention. The upper wall 2 of this pneumatic is shown provided with a valve chamber 3 containing a valve 4, the upper and lower portions 5 and 6 of which may be formed as is very often done of Specification of Letters Patent.

Patented Dec. 14, 1915.

Serial No. 8,526.

leather. The valve may be operated by a puppet pneumatic 7 having a stem 8 connected with the valve.

A valve seat 9 embodying my present invention is shown mounted upon the pneumatic wall 2 above the valve chamber 3 so as to partially close said valve chamber, said valve seat 9, however, having a port 10 allowing communication from the valve chamber 3 to the outside of the same. The valve seat 9 is preferably made by a disk shown alone in Fig. 3, said disk being preferably circular in form and having a circular open ing forming the port 10. This disk may be made of any suitable flexible material, preferably of some form of waterproof paper. Such being the case it may be secured in position by gluing it to the proper part of the apparatus, the glue acting satisfactorily when used in connection with material of this kind. In the drawings the disk is shown set into a circular recess, as shown in Fig. 1. said recess being of substantially the size of the disk so as to accommodate the same. W'here the wall 2 or other part to which the disk is glued is made of wood it is obvious that a perfectly tight and satisfactory joint will be made. This permits the valve 4 to be properly and readily placed in its valve chamber and then the valve seat and closure for the valve chamber provided by adding the disk and gluing or otherwise securing the same in position. A very satisfactory valve seat, much better than the ordinary is thus provided. Furthermore the acid from the leather strip or layer 5 of the valve, assuming the valve to be so provided with a strip or layer does not in any way affect the value seat, and on the other hand there is nothing in the valve seat to corrode or otherwise injuriously affect the leather of the valve. At the same time the valve seat is sufliciently flexible to take up unevcnnesses in the leather or other adjacent part of the valve, and the shrinking or swelling of the wood is readily accommodated.

It will be understood that changes and modifications may be made without departing from the spirit of the invention.

That I claim is:

1. A valve seat composed of a piece of flexible waterproof material provided with an aperture to form a port. 7

2. A valve seat comprising a disk of disk of Waterproof paper closing said chamber and having an aperture providing a port, said disk being glued in position.

In witness whereof, I hereunto subscribe my name this 4th day of February, A. D., 15

ADOLPH P. GUSTAFSON. Witnesses:

A. LYDA J ONES, HAZEL A. JONES.

Waterproof paper provided with a central aperture forming a port.

3. The combination of a pneumatic member provided With a valve chamber and a 5 disk 01": flexible Waterproof material closing said chamber and having an aperture pro viding a port, said disk being glued in position.

4. The combination of a pneumatic mem- 10 bar provided With a valve chamber and a Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, .D. O. 

